Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac0d88d845b6b78…

MALICIOUS

PDF

48.9 KB Created: 2020-08-23 22:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a39e531ec1b6c72243ebe5774355aee0 SHA-1: eb03c2822b0b1a9c76e9c12aece59beb6014e2b0 SHA-256: 1ac0d88d845b6b78ed84c5900bca38fb37df20f0b271ded36a80fd1e8ff0a312
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that, when clicked, redirects to a malicious URL. The document body, though heavily obfuscated, contains text related to 'information technology operations manager interview questions' and the malicious URL itself, suggesting a lure to trick users into clicking. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to known malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=information+technology+operations+manager+interview+questions
    • http://kanomazi.111pta.org/uploads/1/3/0/9/130969754/3470967.pdf
    • http://sumaw.osinttechniques.com/uploads/1/3/1/6/131606938/jakewagexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/favenexev.pdf
    • https://cdn.shopify.com/s/files/1/0438/1540/3682/files/ballade_in_g_minor.pdf
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/atkins_physical_chemistry_archive.pdf
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/4592213177.pdf
    • https://cdn.shopify.com/s/files/1/0452/3288/1824/files/85855954600.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/munenivugotomixuvalomup.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/mawifalagibujebuwasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/acing_the_interview_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/96695323064.pdf
    • https://cdn.shopify.com/s/files/1/0434/1917/3031/files/jepebulezozegenasebek.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072f6.bin
4b25d94618813f72c5279fd2d56bc44942fbeed6767dd232b321bb52b0797ece		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F6 5628 bytes
font_01_sfnt_off00008603.bin
3f6ebc8e6f6230350356802a43924ca17f2d6e87badd9f374139837a98b43df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8603 10044 bytes
font_02_sfnt_off0000a84d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA84D 4324 bytes

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